the proposed scheme can obtain much higher capacity than equal amplitude quantization if provided the same uplink feedback bandwidth.

the experimental results under different conditions, such as network scale, parameter value of competition resolution algorithm and bandwidth allocating scheme for the upstream channel are given, and the optimizing methods are proposed.

文中给出了不同网络规模、冲突解析算法参数值、上行信道带宽分配策略条件下的实验结果。最后提出了优化HFC网上行信道时隙同步性能的措施。

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the research is mainly focused on the dynamic bandwidth allocation schemes of epon upstream channel.

本论文主要对EPON上行信道带宽动态分配技术进行了研究。

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research on dynamic bandwidth allocation scheme in epon

EPON上行动态带宽分配算法研究

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study on the dynamic bandwidth allocation schemes of epon upstream channel

EPON上行信道带宽动态分配技术研究

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a good dynamic bandwidth allocation algorithm should be able to guarantee all users' fairly sharing of upstream bandwidth, and also to ensure the epon system has high throughput in both the uplink and the downlink channels.

一种好的动态带宽分配算法应该能够保证所有用户公平地共享上行带宽、系统的上下行信道均具有较高的吞吐量。

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this paper proposed an overlay topology adaptive optimization algorithm, which is simple, distributed and with the ability of measuring node upload bandwidth directly.

相关研究都未考虑节点间的异构特性，本文提出一种简单的、分布式、具有间接测量节点上行带宽功能的覆盖网络拓扑自适应优化算法。

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but mobile clients still need to send various requests to server through uplink channel in many situations.

但很多情况下仍然需要用户通过有限上行带宽向服务器发送各种请求。

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uplink bandwidth allocation for wireless broadband communication systems

无线宽带通信系统的上行带宽资源分配方案

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design and implementation of uplink bandwidth schedule module for ieee 802.16e system

IEEE802.16系统的上行带宽调度模块的设计与实现

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with the method of differentiated services ( diffserv) for reference, we classified network services into three classes and correspondingly classified the up transmission bandwidth of epon into three portions: reserved bandwidth, high priority bandwidth and low priority bandwidth.

借鉴了区分服务的方法，将服务分级并相应地将EPON的上行带宽分为预留带宽、高优先级和低优先级带宽，并采用了不同的分配策略。

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the simulation results show that the proposed scheme can effectively utilize helpers' spare upload capacity, and can support large-scale on-demand services with relative low server load in the condition of lower ratio of upload bandwidth provided.

仿真实验证明，所提方案可以有效地利用helper节点资源。在上行带宽提供率较低的情况下，仍只需较低的服务器带宽便可以支持大规模的点播服务。

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in this dissertation, some key technologies in epon system are investigated, including study on structure, mpcp protocol, and band allocation algorithm, especial focused on band allocation schemes of epon up channel.

本论文主要对EPON系统的一些关键技术进行了深入的研究，包括系统的体系结构、多点控制协议、带宽分配算法的设计，特别是上行带宽分配算法上的研究。

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upstream bandwidth resource is assigned according to different t-cont priority in the algorithm.

该算法按照不同T-CONT业务的优先级顺序分配上行带宽资源。

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allocation schemes of the uplink bandwidth have attracted much attention in the epon system owing to the topology structure of onu sharing bandwidth in the uplink.

由于EPON系统上行链路多个ONU共享带宽的拓扑结构，因此系统的上行带宽分配算法一直是EPON系统讨论的热点。

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it is shown from the simulation results that the algorithm improves bandwidth utilization of uplink and ensures the qos of different services and shows satisfied delay performance.

通过仿真实验证明，本算法不仅保证了上行带宽的高效利用率，同时保证了不同业务的服务质量（QOS），具有良好的时延特性。

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in order to study the support structure of the distributed epon access dba algorithm, on the epon system upstream bandwidth allocation and scheduling mechanism typical dba algorithm theoretical research.

为了研究支持分布式EPON接入结构的DBA算法，对EPON系统的上行带宽分配调度机制和典型的DBA算法进行了理论研究。

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a improved scheme based on upstream bandwidth for pon

PON上行带宽的改进分配方案

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as the bandwidth of satellite downlink channel is limited, remote sensing image must be compressed first.

在卫星下行信道传输带宽有限的条件下，遥感图像数据必须经过压缩编码处理。

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such unsymmetry is embodied in two aspects, one is the difference between the bandwidths for uplink and downlink, and the other is the difference between common and individual characteristics of information requirement.

这种不对称性具体体现在两个方面：第一，上下行带宽的差异；第二，信息需求的共性和个性的差异。

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cable tv network of new generation has a great unsymmetry exists between bandwidths for uplink and downlink, since it is a network designed originally in the mode of broadcast transmission.

新一代有线电视网络作为原设计为广播传输模式的网络，其上下行带宽具有显著的不对称性。

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